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https://issues.apache.org/jira/browse/LUCENE-3820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218515#comment-13218515
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Dawid Weiss commented on LUCENE-3820:
-------------------------------------
Yep, nice catch. That test case causes a beautiful exponential time pattern to
be generated (I've added it as an @Ignored test :). I limited the input size to
40 characters. With such input it should be possible to traverse the entire
search space, even if it's exponential. I don't see a way to easily verify if a
pattern is exponential or not (without resigning from certain types of
patterns).
> Wrong trailing index calculation in PatternReplaceCharFilter
> ------------------------------------------------------------
>
> Key: LUCENE-3820
> URL: https://issues.apache.org/jira/browse/LUCENE-3820
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Minor
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3820.patch, LUCENE-3820.patch,
> LUCENE-3820_test.patch, LUCENE-3820_test.patch
>
>
> Reimplementation of PatternReplaceCharFilter to pass randomized tests (used
> to throw exceptions previously). Simplified code, dropped boundary
> characters, full input buffered for pattern matching.
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